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     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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    16 ** GNU Lesser General Public License Usage

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    40 ****************************************************************************/

    41 #ifndef QNMEAPOSITIONINFOSOURCE_P_H

    42 #define QNMEAPOSITIONINFOSOURCE_P_H

    43 

    44 //

    45 //  W A R N I N G

    46 //  -------------

    47 //

    48 // This file is not part of the Qt API.  It exists purely as an

    49 // implementation detail.  This header file may change from version to

    50 // version without notice, or even be removed.

    51 //

    52 // We mean it.

    53 //

    54 

    55 #include "qnmeapositioninfosource.h"

    56 #include "qgeopositioninfo.h"

    57 

    58 #include <QObject>

    59 #include <QQueue>

    60 #include <QPointer>

    61 

    62 QT_BEGIN_NAMESPACE

    63 class QBasicTimer;

    64 class QTimerEvent;

    65 class QTimer;

    66 QT_END_NAMESPACE

    67 

    68 QT_BEGIN_HEADER

    69 

    70 QTM_BEGIN_NAMESPACE

    71 

    72 class QNmeaReader;

    73 struct QPendingGeoPositionInfo {

    74     QGeoPositionInfo info;

    75     bool hasFix;

    76 };

    77 

    78 

    79 class QNmeaPositionInfoSourcePrivate : public QObject

    80 {

    81     Q_OBJECT

    82 public:

    83     explicit QNmeaPositionInfoSourcePrivate(QNmeaPositionInfoSource *parent);

    84     ~QNmeaPositionInfoSourcePrivate();

    85 

    86     void startUpdates();

    87     void stopUpdates();

    88     void requestUpdate(int msec);

    89 

    90     bool parsePosInfoFromNmeaData(const char *data,

    91                                   int size,

    92                                   QGeoPositionInfo *posInfo,

    93                                   bool *hasFix);

    94 

    95     void notifyNewUpdate(QGeoPositionInfo *update, bool fixStatus);

    96 

    97     QNmeaPositionInfoSource::UpdateMode m_updateMode;

    98     QPointer<QIODevice> m_device;

    99     QGeoPositionInfo m_lastUpdate;

   100     bool m_invokedStart;

   101 

   102 public Q_SLOTS:

   103     void readyRead();

   104 

   105 protected:

   106     void timerEvent(QTimerEvent *event);

   107 

   108 private Q_SLOTS:

   109     void emitPendingUpdate();

   110     void sourceDataClosed();

   111     void updateRequestTimeout();

   112 

   113 private:

   114     bool openSourceDevice();

   115     bool initialize();

   116     void prepareSourceDevice();

   117     void emitUpdated(const QGeoPositionInfo &update);

   118 

   119     QNmeaPositionInfoSource *m_source;

   120     QNmeaReader *m_nmeaReader;

   121     QBasicTimer *m_updateTimer;

   122     QGeoPositionInfo m_pendingUpdate;

   123     QDate m_currentDate;

   124     QTimer *m_requestTimer;

   125     bool m_noUpdateLastInterval;

   126     bool m_updateTimeoutSent;

   127     bool m_connectedReadyRead;

   128 };

   129 

   130 

   131 class QNmeaReader

   132 {

   133 public:

   134     explicit QNmeaReader(QNmeaPositionInfoSourcePrivate *sourcePrivate)

   135             : m_proxy(sourcePrivate) {}

   136     virtual ~QNmeaReader() {}

   137 

   138     virtual void readAvailableData() = 0;

   139 

   140 protected:

   141     QNmeaPositionInfoSourcePrivate *m_proxy;

   142 };

   143 

   144 

   145 class QNmeaRealTimeReader : public QNmeaReader

   146 {

   147 public:

   148     explicit QNmeaRealTimeReader(QNmeaPositionInfoSourcePrivate *sourcePrivate);

   149     virtual void readAvailableData();

   150 };

   151 

   152 

   153 class QNmeaSimulatedReader : public QObject, public QNmeaReader

   154 {

   155     Q_OBJECT

   156 public:

   157     explicit QNmeaSimulatedReader(QNmeaPositionInfoSourcePrivate *sourcePrivate);

   158     ~QNmeaSimulatedReader();

   159     virtual void readAvailableData();

   160 

   161 protected:

   162     virtual void timerEvent(QTimerEvent *event);

   163 

   164 private Q_SLOTS:

   165     void simulatePendingUpdate();

   166 

   167 private:

   168     bool setFirstDateTime();

   169     void processNextSentence();

   170 

   171     QQueue<QPendingGeoPositionInfo> m_pendingUpdates;

   172     int m_currTimerId;

   173     bool m_hasValidDateTime;

   174 };

   175 

   176 QTM_END_NAMESPACE

   177 

   178 QT_END_HEADER

   179 

   180 #endif